Simulated and experimental study on the relationship between coefficient of friction and temperature of aluminum-based brake disc
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 6 October 2023
Issue publication date: 22 November 2023
Abstract
Purpose
This study aims to clarify the relationship between the coefficient of friction (COF) and temperature of aluminum-based brake discs.
Design/methodology/approach
Three friction blocks with different COFs are examined by a TM-I-type reduced-scale inertial braking dynamometer. On this basis, the thermo-mechanically coupled model of friction pairs is established to study the evolution of brake disc temperature under different COFs using ADINA software.
Findings
Results indicate that the calculated disc temperature field matches the experimental well. The effect of COF on the peak temperature is magnified by the braking speed. With the COF increasing, the rise rate of instantaneous peak temperature is accelerated, and the dynamic equilibrium period and cooling-down period are observed in advance. The increase in COF promotes the area ratio of the high-temperature zone and the maximum radial temperature difference. When the COF is increased from 0.245 to 0.359 and 0.434 at 140 km/h, the area ratio of high-temperature zone increases from 12% to 44% and 49% and the maximum radial temperature difference increases from 56°C to 75°C and 83°C. The sensitiveness of the axial temperature difference to the COF is related to the braking time. The maximum axial temperature difference increases with COF in the early stages of braking, while it is hardly sensitive to the COF in the later stages of braking.
Originality/value
The effect of COF on the aluminum-based brake disc temperature is revealed, providing a theoretical reference for the popularization of aluminum-based brake discs and the selection of matching brake pads.
Keywords
Acknowledgements
This paper was financially supported by the Doctoral Start-up Foundation of Liaoning Province (Grant No. 2019-BS-039), the Scientific Research Foundation of the Education Department of Liaoning Province (Grant No. JDL2020025) and the Dalian High-level Talent Innovation Support Program (Grant No. 2021RQ118).
Citation
Chen, Y., Fu, R., Yang, J., Zhang, E., Su, L. and Gao, F. (2023), "Simulated and experimental study on the relationship between coefficient of friction and temperature of aluminum-based brake disc", Industrial Lubrication and Tribology, Vol. 75 No. 10, pp. 1105-1115. https://doi.org/10.1108/ILT-05-2023-0146
Publisher
:Emerald Publishing Limited
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